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BU21028FV-M Scheda tecnica(PDF) 3 Page - Rohm

Il numero della parte BU21028FV-M
Spiegazioni elettronici  4-wire Resistive Touch Screen Controller
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Produttore elettronici  ROHM [Rohm]
Homepage  http://www.rohm.com
Logo ROHM - Rohm

BU21028FV-M Scheda tecnica(HTML) 3 Page - Rohm

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TSZ02201-0L5L0F300720-1-2
© 2016 ROHM Co., Ltd. All rights reserved.
27.May.2016 Rev.002
www.rohm.com
TSZ22111 • 15 • 001
BU21028FV-M
Pin Configuration(s)
Pin Description(s)
(TOP VIEW)
(Note1) Connect AD1 to GND.
(Note2) SCL and SDA need a pull-up resistor greater than 2.2kΩ.
(Note3) Bypass VREF, DVDD_IN, DVDD_OUT to GND with a 1.0uF capacitor
and do not
connect to the supply.
(Note4) Non-connect internal. Please connect to GND or OPEN.
Equivalent Circuit
Pin
No
Pin
Name
I/O
Description
Equivalent
circuit
1
GNDP
-
Ground for touch screen drivers
-
2
AD0
I
Slave address input bit0
A
3
(NC)
-
- (Note4)
-
4
AD1
I
Test input (Note1)
A
5
SDA
I/O
Serial data (Note2)
C
6
SCL
I
Serial clock (Note2)
C
7
INT
O
Interrupt output.
Pin polarity with active low.
B
8
RSTB
I
System reset
A
9
DVDD_IN
-
Regulator input for control logic.
(Note3)
-
10
VDD
-
Power supply
-
11
GND
-
Ground
-
12
VREF
-
Regulator input for control logic.
(Note3)
-
13
(NC)
-
- (Note4)
-
14
DVDD_OUT
-
Regulator output for control logic.
(Note3)
-
15
VDDP
-
Power supply for
touch screen drivers.
-
16
AUX
I
Auxiliary channel input
D
17
XP
I/O
XP channel input
D
18
YP
I/O
YP channel input
D
19
XN
I/O
XN channel input
D
20
YN
I/O
YN channel input
D
PAD
PAD
PAD
PAD
Figure A.
Figure B.
Figure C.
Figure D.
Pin Description(s)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
XP
YP
XN
YN
GNDP
AD0
(NC)
AD1
SDA
SCL
INT
RSTB
DVDD_IN
VDD
AUX
VDDP
DVDD_OUT
(NC)
VREF
GND


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